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<html>
   
   <head>
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      <link rel="stylesheet" type="text/css" href="sun-style.css">
      <title>Examples</title>
   </head>
   
   <body>
      <hr>
      <a href="plot2cube.html">Next</a> <a href="plot2sky-usage.html">Previous</a> <a href="plot2sky.html">Up</a> <a href="index.html">Contents</a> <br> <b>Next: </b><a href="plot2cube.html">plot2cube: Draws a cube plot</a><br>
       <b>Up: </b><a href="plot2sky.html">plot2sky: Draws a sky plot</a><br>
       <b>Previous: </b><a href="plot2sky-usage.html">Usage</a><br>
      
      <hr>
      <h3><a name="plot2sky-examples">B.8.2 Examples</a></h3>
      <p>Here are some examples of <code>plot2sky</code>:
         
         <dl>
            <dt><strong><pre>
stilts plot2sky in=messier.xml lon=RA lat=DEC
                layer.pos=mark size.pos=4
                layer.txt=label label.txt=Name color.txt=slategrey
</pre></strong></dt>
            <dd>Plots the positions of all the Messier objects on the sky,
               with text labels giving their object names.
               This displays a sphere on the screen that you can rotate/zoom using
               the mouse.
               
            </dd>
            <dt><strong><pre>
stilts plot2sky projection=aitoff
                xpix=600 ypix=300
                gridcolour=green labelcolour=black
                fontsize=10 gridaa=true texttype=antialias
                sex=true crowd=4
</pre></strong></dt>
            <dd>This just plots a celestial coordinate grid with no data.
               Various options are tweaked to adjust the appearance of the grid.
               
            </dd>
            <dt><strong><pre>
stilts plot2sky xpix=1000 ypix=500 fontsize=18 crowd=2
                projection=aitoff viewsys=galactic
                layer1=mark size1=0
                shading1=density densemap1=gnuplot2 densefunc1=log
                densesub1=0.5,.95 denseclip1=0.02,1
                in1=gums_mw_all.fits
                lon1=alpha lat1=delta datasys1=equatorial 
                icmd1=progress out=mw.pdf
</pre></strong></dt>
            <dd>Makes an all-sky plot using an Aitoff projection into
               galactic coordinates of a large dataset.
               <a href="shading-density.html">Density</a> shading
               means that the colour at each point is dependent on
               how many points are plotted; the density colour map has been fine-tuned
               here to get a specific visual effect.
               The sky coordinates in the input file (alpha and delta) are equatorial,
               but these are transformed to galactic coordinates for plotting.
               The <a href="progress.html">progress</a> filter applied to the input table
               displays a progress indicator on the console to see how far it's got.
               The result is written to a PDF file.
               
               <p>This command was used to plot the GUMS-10 MW dataset, a simulation
                  of the milky way stars seen by the Gaia satellite;
                  The 2.1 billion row plot took about 45 minutes.
                  
               </p>
            </dd>
         </dl>
         
      </p>
      <hr><a href="plot2cube.html">Next</a> <a href="plot2sky-usage.html">Previous</a> <a href="plot2sky.html">Up</a> <a href="index.html">Contents</a> <br> <b>Next: </b><a href="plot2cube.html">plot2cube: Draws a cube plot</a><br>
       <b>Up: </b><a href="plot2sky.html">plot2sky: Draws a sky plot</a><br>
       <b>Previous: </b><a href="plot2sky-usage.html">Usage</a><br>
      
      <hr><i>STILTS - Starlink Tables Infrastructure Library Tool Set<br>Starlink User Note256<br>STILTS web page:
         <a href="http://www.starlink.ac.uk/stilts/">http://www.starlink.ac.uk/stilts/</a><br>Author email:
         <a href="mailto:m.b.taylor@bristol.ac.uk">m.b.taylor@bristol.ac.uk</a><br>Mailing list:
         <a href="mailto:topcat-user@jiscmail.ac.uk">topcat-user@jiscmail.ac.uk</a><br></i></body>
</html>